CN112347213A - BIM + GIS-based three-dimensional display method for digitized achievement of railway engineering - Google Patents
BIM + GIS-based three-dimensional display method for digitized achievement of railway engineering Download PDFInfo
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Abstract
The invention relates to a BIM + GIS-based three-dimensional display method for a railway engineering digital result, which comprises the following steps: collecting and sorting data; making topographic data and vector thematic data; creating a multi-source multi-resolution real three-dimensional terrain scene, and carrying out BIM design of a station yard, a bridge, a tunnel, a roadbed and geology; processing and importing BIM design model data into a GIS platform; checking error and collision leakage between the BIM design model and the model and between the model and the terrain; and carrying out secondary development on the GIS platform to meet the display requirement. The invention can be used for a designer to review and browse the railway engineering full-line three-dimensional BIM in a high-precision real terrain scene through the browser, and meets the requirements of omnibearing and multi-factor expression and delivery of design results.
Description
Technical Field
The invention relates to the technical field of railway engineering surveying and mapping, in particular to a BIM + GIS-based three-dimensional display method for a railway engineering digital result.
Background
The BIM technology originates from the United states, and through years of development, BIM application has been developed on an initial scale in the building field, and the BIM data exchange standard IFC developed by the building SMART international organization is formed, so that the BIM technology is more standard and universal. The BIM technology in China starts late, but develops quickly, and is applied more and more widely in the field of rail transit at present.
The BIM model has the characteristics of fine geometric structure, abundant semantic information and obvious parameter characteristics, realizes three-dimensional digital expression of the traditional two-dimensional engineering drawing, enables railway engineering construction participants to acquire information such as geometry, physics, attributes, processes and the like borne by the model more intuitively and conveniently, improves the information sharing level, has the capacity of three-dimensional combination and assembly, and can realize rapid modeling by utilizing a family library. However, unlike building engineering, railway engineering shows linear shape, large span, multiple professions, complex and various work points, and the like, and the BIM three-dimensional information model has disadvantages in scale expression, consistent analysis, uniform spatial coordinates, and the like, and therefore needs to be combined with the GIS.
The GIS is based on three-dimensional visualization of space, is based on a spatial database technology, is oriented to massive three-dimensional geographic space data, integrates complete three-dimensional space entities up and down, indoors and outdoors, and has strong functions of spatial data storage, management, retrieval and analysis.
However, the existing GIS base platform cannot directly support the model component level management, structure tree node information maintenance, fine reference model and technical document hooking functions meeting the requirements of railway engineering information model expression standard and railway engineering information model delivery accuracy standard. In order to better express and show key engineering BIM design results, a GIS basic platform needs to be developed secondarily on the basis of splicing and fusing railway BIM design results in a high-precision real three-dimensional terrain scene, functional modules conforming to railway BIM model expression are expanded, and finally a multi-factor digital three-dimensional examination and display platform meeting the requirement of omnibearing and multi-factor digital railway project BIM design results is formed.
Disclosure of Invention
The invention aims to provide a BIM + GIS-based three-dimensional display method for the digitized achievement of railway engineering, which can be used for a designer to review and browse a full-line three-dimensional BIM model of the railway engineering in a high-precision real terrain scene through a browser, and can meet the requirements of omnibearing and multi-factor expression and delivery of the design achievement.
The technical scheme adopted by the invention is as follows:
a railway engineering digital result three-dimensional display method based on BIM + GIS is characterized in that:
the method comprises the following steps:
(1) collecting and sorting data;
(2) making topographic data and vector thematic data;
(3) creating a multi-source multi-resolution real three-dimensional terrain scene, and carrying out BIM design of a station yard, a bridge, a tunnel, a roadbed and geology;
(4) processing and importing BIM design model data into a GIS platform;
(5) checking error and collision leakage between the BIM design model and the model and between the model and the terrain;
(6) and carrying out secondary development on the GIS platform to meet the display requirement.
In step (1), the data includes the line central line, the banded projection parameters, the work point design information table and the related design drawing.
In the step (2):
the topographic data comprises a 1:10000, 1:2000 and 1:500 high-precision strip DEM topographic and multi-resolution DOM image and a major segment high-precision inclined real-scene three-dimensional model;
the vector thematic data comprises a line central line, work point name marking, mileage marking and unfavorable geology.
In the step (3), the multi-source multi-resolution real three-dimensional terrain scene is a real three-dimensional environment which integrates three-dimensional terrain, surface images, inclined real scenes and two-dimensional vector elements.
In the step (4), the data processing of importing the BIM design model into the GIS platform comprises model format conversion, projection transformation and light weight, and the geometric, material and attribute information of the model is completely reserved.
In the step (5):
checking errors and missed collisions between the BIM design models and the models and between the models and the terrain, and finding out conditions that the splicing between the BIM design models and the BIM design models are in accordance with the terrain; and (4) if the error and the miss collision exist, returning to the step (3) to update the scene after feedback modification, and reprocessing and importing the scene into the GIS platform.
The step (6) is specifically as follows: and (4) performing data warehousing and foreground query display on relevant work point information and design data according to the categories of stations, bridges, tunnels, abandoned slag yards and major temporary projects, analyzing BIM model positioning codes to generate a structure tree positioning query and an associated detailed reference model with reinforcing bars, and designing a UI interface to meet display requirements.
The invention has the following advantages:
1. according to the invention, the positioning management and the attribute query display of the BIM model according to the logic structure are realized by analyzing the LID positioning code in the secondary development, and a specific hole beam and a specific pier can be quickly positioned, so that the use habit of a user is better met;
2. the invention establishes the association of the BIM model with the design drawing and the construction method in the secondary development, and is convenient for a user to look up the BIM design related data at any time;
3. according to the invention, in secondary development, the fine BIM model with the reinforcing bars is expressed in a picture-in-picture mode, and the full-line low-precision model is loaded in a three-dimensional terrain scene, so that smooth experience of user operation is ensured.
Drawings
FIG. 1 is a flow chart of the method of the present invention.
FIG. 2 is a schematic diagram of a BIM model structure tree positioning query interface according to the present invention.
FIG. 3 is a schematic diagram of a BIM-associated fine reference model interface according to the present invention.
Detailed Description
The present invention will be described in detail with reference to specific embodiments.
The invention relates to a BIM + GIS-based railway engineering digital result three-dimensional display method, which comprises the following steps:
(1) collecting and sorting data; the data includes the line central line, the banded projection parameters, the work point design information table and the related design drawing.
(2) Making topographic data and vector thematic data; the topographic data comprises a 1:10000, 1:2000 and 1:500 high-precision strip DEM topographic and multi-resolution DOM image and a major segment high-precision inclined real-scene three-dimensional model; the vector thematic data comprises a line central line, work point name marking, mileage marking and unfavorable geology.
(3) Creating a multi-source multi-resolution real three-dimensional terrain scene, and carrying out BIM design of a station yard, a bridge, a tunnel, a roadbed and geology; the multi-source multi-resolution real three-dimensional terrain scene is a real three-dimensional environment which integrates three-dimensional terrain, surface images, inclined real scenes and two-dimensional vector elements.
(4) Processing and importing BIM design model data into a GIS platform; the data processing of importing the BIM design model into the GIS platform comprises model format conversion, projection transformation and light weight, and the geometric, material and attribute information of the model is completely reserved.
(5) Checking errors and missed collisions between the BIM design models and the models and between the models and the terrain, and finding out conditions that the splicing between the BIM design models and the BIM design models are in accordance with the terrain; and (4) if the error and the miss collision exist, returning to the step (3) to update the scene after feedback modification, and reprocessing and importing the scene into the GIS platform.
(6) Carrying out secondary development on the GIS platform to meet the display requirement; and (4) performing data warehousing and foreground query display on relevant work point information and design data according to the categories of stations, bridges, tunnels, abandoned slag yards and major temporary projects, analyzing BIM model positioning codes to generate a structure tree positioning query and an associated detailed reference model with reinforcing bars, and designing a UI interface to meet display requirements.
Referring to the drawings, the display method related to the invention comprises the following steps:
(1) the method comprises the steps of establishing a basic project unit of data calculation and organization by using a specific railway line or interval, and performing digital result display data organization by using a project as a unit.
(2) Collecting and sorting data, wherein the basic data mainly comprises a line central line, banded projection parameters, a work point design information table, a related design drawing and the like.
(3) Manufacturing terrain data and vector thematic data, wherein the terrain data comprises a 1:10000, 1:2000 and 1:500 high-precision strip DEM terrain, a multi-resolution DOM image and a key section falling high-precision inclined live-action three-dimensional model; the vector thematic data comprises line center lines, work point name labels, mileage labels, unfavorable geology and the like.
(4) Creating a multi-source multi-resolution real three-dimensional terrain scene, and fusing a real three-dimensional environment with rich information such as three-dimensional terrain, surface images, inclined real scenes, two-dimensional vector elements and the like.
(5) Meanwhile, the railway engineering design major develops BIM three-dimensional designs of stations, bridges, tunnels, roadbeds, geology and the like based on line center lines and high-precision topographic data.
(6) The BIM design model data processing and importing method comprises the steps of carrying out format conversion, projection conversion and light weight on a BIM model (format conversion is to convert formats of original BIM design files such as dgn and rvt into a private data format supported by the GIS platform, projection conversion is to add projection information to the BIM model after format conversion so as to accurately place the BIM model into a three-dimensional geographic scene, light weight is to optimize a complex BIM model to reduce the number of triangular surfaces, slice the complex BIM model to generate a cache file with LOD to improve the loading efficiency of the BIM model in the GIS scene), and the like, then importing the data into the three-dimensional GIS scene, and completely keeping the geometric, material and attribute information of the BIM model.
(7) And checking errors and missed collisions between the BIM model and the model and between the model and the terrain, feeding back and modifying existing problems, updating the scene, realizing seamless fusion of the BIM model and the terrain, and constructing an integrated railway three-dimensional geographical scene of the upper and lower parts of the ground and the indoor and outdoor parts.
(8) And (4) performing secondary development on the GIS platform based on the three-dimensional scene in the step (7), including data storage and foreground query display on relevant work point information and design data according to categories such as stations, bridges, tunnels, abandoned dreg sites, major temporary projects and the like, analyzing BIM model positioning codes to generate structure tree positioning query and associated detailed reference models with reinforcing bars, and designing a UI (user interface) to meet the application requirements of meeting room large-screen review display.
The invention is not limited to the examples, and any equivalent changes to the technical solution of the invention by a person skilled in the art after reading the description of the invention are covered by the claims of the invention.
Claims (7)
1. A railway engineering digital result three-dimensional display method based on BIM + GIS is characterized in that:
the method comprises the following steps:
(1) collecting and sorting data;
(2) making topographic data and vector thematic data;
(3) creating a multi-source multi-resolution real three-dimensional terrain scene, and carrying out BIM design of a station yard, a bridge, a tunnel, a roadbed and geology;
(4) processing and importing BIM design model data into a GIS platform;
(5) checking error and collision leakage between the BIM design model and the model and between the model and the terrain;
(6) and carrying out secondary development on the GIS platform to meet the display requirement.
2. The BIM + GIS-based railway engineering digital result three-dimensional display method according to claim 1, characterized in that:
in step (1), the data includes the line central line, the banded projection parameters, the work point design information table and the related design drawing.
3. The BIM + GIS-based railway engineering digital result three-dimensional display method according to claim 2, characterized in that:
in the step (2):
the topographic data comprises a 1:10000, 1:2000 and 1:500 high-precision strip DEM topographic and multi-resolution DOM image and a major segment high-precision inclined real-scene three-dimensional model;
the vector thematic data comprises a line central line, work point name marking, mileage marking and unfavorable geology.
4. The BIM + GIS-based railway engineering digital achievement three-dimensional display method according to claim 3, wherein the method comprises the following steps:
in the step (3), the multi-source multi-resolution real three-dimensional terrain scene is a real three-dimensional environment which integrates three-dimensional terrain, surface images, inclined real scenes and two-dimensional vector elements.
5. The BIM + GIS-based railway engineering digital achievement three-dimensional display method according to claim 4, wherein the method comprises the following steps:
in the step (4), the data processing of importing the BIM design model into the GIS platform comprises model format conversion, projection transformation and light weight, and the geometric, material and attribute information of the model is completely reserved.
6. The BIM + GIS-based railway engineering digital achievement three-dimensional display method according to claim 5, wherein the method comprises the following steps:
in the step (5):
checking errors and missed collisions between the BIM design models and the models and between the models and the terrain, and finding out conditions that the splicing between the BIM design models and the BIM design models are in accordance with the terrain; and (4) if the error and the miss collision exist, returning to the step (3) to update the scene after feedback modification, and reprocessing and importing the scene into the GIS platform.
7. The BIM + GIS-based railway engineering digital achievement three-dimensional display method according to claim 6, wherein the method comprises the following steps:
the step (6) is specifically as follows: and (4) performing data warehousing and foreground query display on relevant work point information and design data according to the categories of stations, bridges, tunnels, abandoned slag yards and major temporary projects, analyzing BIM model positioning codes to generate a structure tree positioning query and an associated detailed reference model with reinforcing bars, and designing a UI interface to meet display requirements.
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Cited By (5)
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| CN113723786A (en) * | 2021-08-20 | 2021-11-30 | 寰球孪生空间设计(云南)有限公司 | Visual planning auxiliary system based on three-dimensional GIS |
| CN114241142A (en) * | 2021-11-23 | 2022-03-25 | 北京国网富达科技发展有限责任公司 | Multi-precision DEM data difference value smooth fusion method and system |
| CN115130178A (en) * | 2022-06-22 | 2022-09-30 | 北京鼎兴达信息科技股份有限公司 | Method, device, equipment and medium for generating three-dimensional scene model of railway line |
| CN115798137A (en) * | 2022-08-02 | 2023-03-14 | 中建铁路投资建设集团有限公司 | Three-dimensional visual big data monitoring and early warning system based on Internet of things |
| WO2024103695A1 (en) * | 2022-11-17 | 2024-05-23 | 天津市勘察设计院集团有限公司 | Three-dimensional gis-based geotechnical engineering bim application system |
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